a47d20f8be
Administrative source import: native x86 compilation passed for 423 authored units. Source placement and submission states are migrated separately; this commit does not imply peer acceptance.
Previous head: 35d2a8cb36
Payload SHA256: 592f016d2730c5593bb653aa054c1e5f76a6df72c8f5a09e66f74876e2e33dee
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
#include "Render/Primitives/DepthAlpha.h"
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#include "Render/Primitives/LightmappedPrimitive.h"
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#include "Render/Primitives/RenderPrimitive.h"
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#include <cmath>
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// OFFSET: 0x0055D190
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// FUNCTION: fn_02100
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std::uint32_t DepthAlpha(float reciprocalDepth, float start, float end) {
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float value = ((1.0f / reciprocalDepth) - 10.0f) / 1490.0f;
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const float range = end - start;
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if (range != 0.0f) {
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value = (value - start) / range;
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}
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const float lower = 0.0f > value ? 0.0f : value;
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const float upper = 1.0f < lower ? 1.0f : lower;
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const float alpha = (1.0f - upper) * 255.0f;
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const std::uint32_t converted = std::isnan(alpha) ? UINT32_MAX : static_cast<std::uint32_t>(alpha);
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return converted << 24;
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}
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// OFFSET: 0x005694A0
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// FUNCTION: fn_02260
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void ApplyDepthAlpha(RenderCommand& command, float start, float end) {
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if (command.vertexCount > 0) {
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for (int index = 0; index < command.vertexCount; ++index) {
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command.vertices[index].specular = DepthAlpha(command.vertices[index].rhw, start, end);
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}
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}
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}
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// OFFSET: 0x005694E0
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// FUNCTION: fn_02261
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void ApplyDepthAlpha(LightmappedPrimitive& command, float start, float end) {
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if (command.vertexCount > 0) {
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for (int index = 0; index < command.vertexCount; ++index) {
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command.vertices[index].specular = DepthAlpha(command.vertices[index].rhw, start, end);
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}
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}
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}
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